Question

Find in the simplest form, an expression for the perimeter of the figures:​

Answer 1

Explanation:

in perimeter you have to sum up all the side.

in this question you add (x-3) six times because (x-3) is side of hexagon so

(x-3)*6 = 6x - 18

therefore

(6x - 18) = perimeter(given in book)